Washing machine



1927- H. w. 'MITCHELIL WASHING MACHINE Filed April,2, 1923 3Sheets-Sheet lv Oct. 25, 1927.

H. w. MITCHELL WASHING MACHINE Filed April 2, 1923 3 Sheets-Sheet 2 MMVW. 1 646 972 5 H. w. MITCHELL WASHING momma Filed April Z. 1923 sSheets-Sheet s Patented Oct. 25, 1927. UNITE D STATES PATENT GFFICE.

nanny wMrrcn'n-LL, or crnvnnann, onro, Assreivon TO e. r. MITCHELL ason, A rnnrnnnsnreor GEORGE E. Infrrczeznm, enonen n. MITCHELL, an]:HARRY W.

MITCHELL, or CLEVELAND, onro.

'wnsnrne MACHINE.

Application filed April 2, 1923. Serial No. 629,277.

This invention relates to a washing inathe washing drum 1 ishorizontally disposed 55 chine for ashing clothes, fabrics and the andis rotatably supported between upright like, and designed particularlyfor houseportions 2 and 3 of the supporting frame and hold use, thewasher disclosed herein being is eriven by suitable driving mechanism t5 of the type in which the clothes arewashcd carried by the portion ofthe frame. The

in a rotating water tight drunrin which the driving mechanism ispreferably of the au- 60 clothes and wash water are placed. tolnaticreversing type in which the drum is An object of the invention is toprovide alternately driven a predetermined number improved means withinthe drum for forcof revolutions in each direction. The specific ing airthrough the water and through the driving mechanism which I prefer touse for clothes in the water during the rotation of driving the drum isdisclosed in my applica t5 the drum. tioirSerial il'o. 629,278, filedApril 2, 1923.

A further object is to provide perforated The drum 1 has a cylindricalsheet metal partition members within the drum forming body and sheetmetal heads 6 and 7 secured chambers adjacent the periphery of the drumto the ends of the cylindrical body. Each in which air istrapped andcarried beneath of the heads has a. peripheral outturned the surface ofthe liquid during the rotation flange 8 which fits within thecylindrical of the drum the partition members being boty The body 5 hasperipheral grooves readily removable to permit the interior of adjacentits ends forming internal. heads 9 20 the drum to be cleaned. againstwhich the heads 6 and Tengage- The A further object is to provide aneffec edge portions of the sheet metal cylinder 5 tivcly sealed closurefor the aperture in the are turned back over the peripheral flanges drumthrough which the clothes are inserted. 8 of the heads 6 and 'l to unitethe heads to and removed. 7 j the cylindrical body.

A. further object is to provide improved The heads 6 and 7 are sheetmetal stampreinforced heads for the drum and also to ings formed with araised central portion 10 provide improved means for securing the fromwhich the ribs 11 extend radially to adsupporting trunnions to theheads. acent the periphery of the heads. The rein- A further object isto provide a valve conforcing ribs 11 are relatively wide and deep 30trolled drain outlet for the drum together adjacent the center of thehead and taper with conveniently accessible means for oper toward theperiphery thereof. Two crescent 5 ating the valve. shaped depressions 12positioned between A further object is to locate the drain radial ribs11 with their ends adjacent the outlet in a par of the drum where. theclothes periphery of the head serve to furtheure within the drum cannotchoke the drain inforce the head and also to provide arcuate outlet.ledges upon the inner sides of the head for Other objects willv beapparent from the a purpose which willv he hereinafter setforth.following description and accoinpanyiug A third crescent shaped.depression 1?) is prod rawings. vidcd at the end of one of the radialribs 11 40 Reference should belied to the acconipauyand serves the samepurpose as the depresing drawings forming a part of this specitisions12. cation in which Fig. 1 is a transverse verti- Cup-shaped trunnioncarrying disks let cal section in the plane of the axis of the shown indetail in Figs? and 8 are attached drum; Fig. 2 is an end elevation ofthe centrally to the headsG and 7. The disks 14; drum; 3 is a top planview of the drum; are provided 'with peripheral flanges 15 Fig. #l is afragmentary vertical section on which have raised portions to lit overthe ribs an enlarged scale taken on line l1 of Fig. 11 and intermediateflat portions adapted to 1 Fig. 5 is a fragmentary plan view of the fitagainst the flat portions of the head heextensible perforated partition;Fig. 6 is a tween the ribs. The flangelS of each dish 1s 59 fragmentarylongitudinal section through suitably secured to the head. Each cuponeofthe peripheral air trappingchambers; shaped disk l l has a centralaperture 16 Figs. 7 and 8 are a plan and sectional view through whichthe supporting trunnion exrespectively of the trunnion carrying disks.tends the trunnion 17 carried by the (iii-2k;

Referring to the accompanying drawings attach-ed to the head 7 being asupportrp g 26 which extends into the hollow stein trunnion and thetrunnion carried by the disk attached to the head 6 being a drivingtrunnion. The supporting trunnion 17 has a head 19 secured within thecup portion of the disk 1 1 attached to the head 7 and a stem 20 whichextends through the aperture 16 of the disk and projects into a bearing21 mounted on the-supporting standard 3. The driving trunnion 18 has ahead 22 secured within the cup portionof the disk attached to the head 6and a hollow stem 23 extenuing through the central apertureof the disk.The hollow stem 28 has slots 2 1 extending inwardly from the end thereofto receive driving pins 25 on theend of a 'driveshaft '7 A series ofsegmental chambers 27 are provided 'achacent the periphery of the drumupon the inside thereof by means of transversely curvedpartition'n'ieinbers which ex tend fromone end of the drum to the otherand fit beneath the arcuate ledges formed by the depressions 12 and 13in the head. Each ofjthe partitions consists of a main perforated plate28 and a perforated extension plate 29 telescopically connected to theplate 28. The plates 28 and 29 are provlded with central rows ofperforations 30 and additional rows of perforations 32 adjacent thelongitudinal edges'thereof. The plate 28 has itsedge'portions'rolledover to forn: hollow be'ads33 which rest against theperiphery of the drum. The extension plate 29 has similar edge heads atwhich are I adapted to fit slidably'within the edge beads 33 of the mainplate 28. The extension plate 29 fits within the end portion of the mainpartition plate 28 and is slida-ble longi tudinallythereof. A; pair ofspring latch bars 35 are attached atoneend' to the underside of theplate 29 and have round upwzirdly extending studs 36 which have roundedends and extend through apertures in the extension plate 29. The mainpartitionplate '28 has apertures'which register with the apertures inthe plate 29 through which the studs 36 project when the plates arefully extended permitting the studs 86 to project through the, aperturesin both plates and lockthe plates in extended posi tion. The partitionplates 28 and 29 are so formed that they fit against the 'arc'uateledges 12 and 13 in the. heads of the drum 7 (ill with theiredgeportions resting against thr periphery of theidrum, When the partitionplates 28 and29are extended'so that tliey are locked by the studs36, theends thereof will be beneath the ledges 1201 13 in the heads and thepartition memberwill be held rigidly' in place. VlVhenever' it desiredto;

remove these partition members as will be desirablefor "cleaning theinterior of'the drum, they can be'reinoved by simply're-J leasing thestuds 36 b pushing them. in- "wardly and sliding the extension-plate '29into the plate 28 until the partition member is released from the ledgeson the heads.

In the operation of the machine the chambers 2'? upon each revolution ofthe drum will move through the air space above the water in the drum andwhen in this position the water will drain out of the chamber and as thechambers 27" move through the liquid the air will be gradually displacedby water and forced through the openings 30 and 32 out into the body ofliquid containing the clothes or fabrics being washed.

the entrance of water into the chambers 27f thechambers. are movingdownwardly into'the liquid and to retard the discharge of water from thechambers as the chambers are moving upwardly out of the liquid so thatpractically all of the air within the chambers will be discharged afterthe chambers are wholly submerged in the liquid and practically all ofthe water will be discharged after the chambers have been lifted out ofthe liquid, thus roviding' a more continuous discharge of alr during thepas of the chambu'sthrough the liquid and in more continuous dischargeof water during the passage of the chambers above the liquid. a

37 is rolled back upon itself toprovide a sub stantially cylindricaledge bead 38 surroundmg the opening.

cliannel a l) which'is adapted to fit over'the edge head 38 of. theopening. --r11e channel 40 has tapered walls providinga wedgingengagement with thebead 88 and providing a space in theibottom of thechannel above "the bead 38 inwhich a suitable packing 41 The closuremember 89 is may be placed. 7 secured 1n place over the opening by meansof suitablejclampingbars 4:2.

i A suitable drain fixture has a portion 43' forming: an outlet passageattached to the cylindrical-body 5 of the drum and communicating withthe interior of the chamber 27 which is diametrically oppositetheopeningfar. The drain'fixture has a'valvegchamber la-just outside the end ofthe drum to which the drain passage 43cleads. The valve chamber 4-4-hastan outletc'onti olled by a valve slidably inounted inthe disk-14behind the head 19 0f the supporting trunnion. The

The closure member 89 is IOTIDGCl with a marginal inwardly racing whichhas air-spring metal ste1nl46 whichy extends diametrically across thelTGZLdQZlDCl' is.

= of the head &8 and the narrow portion of which is adapted to receivethe rod 46. To open the valve 45, the stem ltl is pulled upwardly untilthe shank 49 is clear of the bracket 50, whereupon the rod 46 willspring in\\'ardly into the narrow port-ion of the slot 51, locking thevalve 4-5 in open position. A small. catch basin 52 is mounted on thestandard 3 immediately beneath the end of the drum to which thedrainfixture is attached and is provided with an outlet nipple 53adapted to be connected to a suitable conduit for carrying away theliquid drained from the drum.

The drum operating mechanism preferably includes a device for stoppingthe rotation of the drum in such a manner that the drum will always sostopped with the opening 3? at the top and the drain fixture at thebottom directly over the catch basin 52. Such stop mechanism being shownin my copending application Serial No. 629,278, above referred to.

By reason of the fact that the drain fixture COHIHIUDlQHtGS with theinterior of one of the air trapping chambers 27, the clothes or otherfabric articles within the drum cannot interfere with the drainage ofliquid from the drum since they cannot be drawn to the drain outlet.

Having described my invention, I claim 1. A washing machine comprising awater tight drum adapted to receive the cleansing name and the articlesto be cleansed, means for rotatably supporting said drum, and aplurality of inwardly bowed perforated partition nieml'iers securedwithin the drum with the ends thereof engaging the ends of the drum andthe longitudinal thereof engaging the periphery of the drum, saidpartition members comprising telescop cally connected plates and meansfor retaining said partition members in extended position, the end wallsof said drum being provided with retaining ledges engaging the innersides of said partition members.

2. A washing machine comprising a retat-ably supported water tight drumadapted to receive the cleansing liquid and the arti cles to be cleaned,partition members forming segn'iental chambers at the periphery of thedrum, each of said partition members con'iprising a pair oftelescopically connected perforated plates, a spring latch carried byone of said plates engageable-With a perforation in the other plate tohold said plates in extended position, the end walls of the drum beingformed with ledges engageable with ends of the telescopic partitionmembers to hold them in place.

3. A Washing machine comprising a retatably supported water tight drumadapted to receive the cleansing fluid and the articles to be cleansed,said drum having a cylindrical body and end walls formed of sheet metal,said end walls each having a plurality of arcuate depressions forn'iinginternal arc-uate retaining ledges, the ledges at one end being alignedwith corresponding ledges at the opposite end, and extensible arcnatepartition members having their ends engaging said ledges, said partitionmembers each comprising telescopically connected perforated plates.

4t. In a washing machine having a water tight cylindrical drum, apartition member comprising a perforated curved plate hav ing rolledover longitudinal edges, a second perforated curved plate having its endtitting within an end of the first plate and its longitudinal edgeportions fitting within the rolled over edge of the first plate, and apair of resilient strips secured to the inner side of the second plate,said strips having locking studs extending upwardly through perforationsin the plate to which they are attached and engageable in perforationsin the other plate.

5. In a washing machine a drum having a cylindrical body and sheet metalheads, each head being stamped to form a raised central portion andreinforcing ribs radiating from said central portion, and trunnioncarrying disks secured to said heads, said disks be ing formed with araised hub portion and a peripheral flange conforming to the ribbedsurface of the head.

6. In a washing machine a drum having a cylindrical body and sheet metalheads, eabh head being stamped to form a raised central portion withribs extending radial therefrom, said ribs being relatively wit adjacentthe central portion and tapering toward their outer ends which liezuljacent' the periphery of the heads, a. trunnion carrying disk securedto each head, said disks each having a central cup-shaped recess, a

peripheral flange and an aperture at the center of the recess, saidflange being formed to fit over the ribs and conform to the surface ofthe head outside the central raised portion thereof, and a trunnioncarried by each disk, said trunnions each having i flange fitting withinthe cup shaped recess in the disk and secured to the disk and a stemprojecting through the aperture in the disk.

In testimony whereof, I hereunto my signature.

HARRY W. MITCHELL.

a base 7 ltlil

